EP 0525810 B1 19980107 - A constant impedance transition between transmission structures of different dimensions
Title (en)
A constant impedance transition between transmission structures of different dimensions
Title (de)
Konstantimpedanzübergang zwischen Übertragungsstrukturen verschiedener Grössen
Title (fr)
Transition avec impédance constante entre structures de transmission de dimensions diverses
Publication
Application
Priority
US 73900991 A 19910731
Abstract (en)
[origin: EP0525810A1] A microstrip transmission line structure a series of connected microstrip strip sections having different widths disposed on an outside layer of a unitized multilayer circuit structure and forming a microstrip line, respective ground planes for each of the strip sections formed between insulating layers of the unitized multilayer circuit structure and respectively spaced from the associated strip sections to provide a substantially constant impedance along the length of the microstrip line, and a plurality of conductive vias for electrically interconnecting the respective ground planes. <IMAGE>
IPC 1-7
IPC 8 full level
H01L 23/64 (2006.01); H01L 23/66 (2006.01); H01P 1/02 (2006.01); H01P 3/08 (2006.01); H01P 5/02 (2006.01); H01P 11/00 (2006.01); H05K 1/02 (2006.01); H05K 1/00 (2006.01)
CPC (source: EP KR US)
H01L 23/64 (2013.01 - EP US); H01L 23/66 (2013.01 - EP US); H01P 5/02 (2013.01 - KR); H01P 5/028 (2013.01 - EP US); H05K 1/025 (2013.01 - EP US); H05K 1/0253 (2013.01 - EP US); H01L 2223/6627 (2013.01 - EP US); H01L 2924/09701 (2013.01 - EP US); H01L 2924/15173 (2013.01 - EP US); H01L 2924/1903 (2013.01 - EP US); H01L 2924/3011 (2013.01 - EP US); H05K 1/0237 (2013.01 - EP US); H05K 1/0298 (2013.01 - EP US); H05K 2201/0191 (2013.01 - EP US); H05K 2201/093 (2013.01 - EP US); H05K 2201/09727 (2013.01 - EP US); H05K 2201/09845 (2013.01 - EP US); H05K 2201/10689 (2013.01 - EP US)
Citation (examination)
US 4890155 A 19891226 - MIYAGAWA FUMIO [JP], et al
Designated contracting state (EPC)
CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
EP 0525810 A1 19930203; EP 0525810 B1 19980107; AU 633774 B1 19930204; CA 2074975 A1 19930201; CA 2074975 C 19960326; DE 69223871 D1 19980212; DE 69223871 T2 19980716; ES 2111022 T3 19980301; IL 102695 A0 19930114; IL 102695 A 19950831; JP H05235612 A 19930910; KR 930003262 A 19930224; KR 960013298 B1 19961002; US 5184095 A 19930202
DOCDB simple family (application)
EP 92113131 A 19920731; AU 2073692 A 19920731; CA 2074975 A 19920730; DE 69223871 T 19920731; ES 92113131 T 19920731; IL 10269592 A 19920731; JP 20516292 A 19920731; KR 920013784 A 19920731; US 73900991 A 19910731